Joint and arm portions of spring biased hinge



FIG. 1 is a perspective view of joint and arm portions of a spring biased hinge showing our new design, with the two pivotally connected arms of the hinge extending substantially parallel, with the view showing principally top, front and right regions thereof, and with typical arm portions that comprise no part of the design being depicted by broken lines;

FIG. 2 is a perspective view thereof showing principally bottom, front and left regions thereof, with the two pivotally connected arms of the hinge extending non-parallel;

FIG. 3 is a right end elevational view thereof with the arms of the hinge oriented as in FIG. 1;

FIG. 4 is a front side elevational view thereof; and,

FIG. 5 is a top plan view thereof. 

We claim the ornamental design for joint and arm portions of spring biased hinge, as shown and described. 